Add qcms library for applying ICC color profile transforms to images. This...

third_party/qcms/qcmsint.h

+#include "qcms.h"
+#include "qcmstypes.h"
+
+/* used as a lookup table for the output transformation.
+ * we refcount them so we only need to have one around per output
+ * profile, instead of duplicating them per transform */
+struct precache_output
+{
+        int ref_count;
+        /* We previously used a count of 65536 here but that seems like more
+         * precision than we actually need.  By reducing the size we can
+         * improve startup performance and reduce memory usage. ColorSync on
+         * 10.5 uses 4097 which is perhaps because they use a fixed point
+         * representation where 1. is represented by 0x1000. */
+#define PRECACHE_OUTPUT_SIZE 8192
+#define PRECACHE_OUTPUT_MAX (PRECACHE_OUTPUT_SIZE-1)
+        uint8_t data[PRECACHE_OUTPUT_SIZE];
+};
+
+#ifdef _MSC_VER
+#define ALIGN __declspec(align(16))
+#else
+#define ALIGN __attribute__(( aligned (16) ))
+#endif
+
+struct _qcms_transform {
+        float ALIGN matrix[3][4];
+        float *input_gamma_table_r;
+        float *input_gamma_table_g;
+        float *input_gamma_table_b;
+
+        float *input_gamma_table_gray;
+
+        float out_gamma_r;
+        float out_gamma_g;
+        float out_gamma_b;
+
+        float out_gamma_gray;
+
+        uint16_t *output_gamma_lut_r;
+        uint16_t *output_gamma_lut_g;
+        uint16_t *output_gamma_lut_b;
+
+        uint16_t *output_gamma_lut_gray;
+
+        size_t output_gamma_lut_r_length;
+        size_t output_gamma_lut_g_length;
+        size_t output_gamma_lut_b_length;
+
+        size_t output_gamma_lut_gray_length;
+
+        struct precache_output *output_table_r;
+        struct precache_output *output_table_g;
+        struct precache_output *output_table_b;
+
+        void (*transform_fn)(struct _qcms_transform *transform, unsigned char *src, unsigned char *dest, size_t length);
+};
+
+typedef int32_t s15Fixed16Number;
+typedef uint16_t uInt16Number;
+
+struct XYZNumber {
+        s15Fixed16Number X;
+        s15Fixed16Number Y;
+        s15Fixed16Number Z;
+};
+
+struct curveType {
+        uint32_t count;
+/* Using the C99 flexible array member syntax with IBM compiler */
+#if defined (__IBMC__) || defined (__IBMCPP__)
+        uInt16Number data[];
+#else
+        uInt16Number data[0];
+#endif
+};
+
+struct lutType {
+        uint8_t num_input_channels;
+        uint8_t num_output_channels;
+        uint8_t num_clut_grid_points;
+
+        s15Fixed16Number e00;
+        s15Fixed16Number e01;
+        s15Fixed16Number e02;
+        s15Fixed16Number e10;
+        s15Fixed16Number e11;
+        s15Fixed16Number e12;
+        s15Fixed16Number e20;
+        s15Fixed16Number e21;
+        s15Fixed16Number e22;
+
+        uint16_t num_input_table_entries;
+        uint16_t num_output_table_entries;
+
+        uint16_t *input_table;
+        uint16_t *clut_table;
+        uint16_t *output_table;
+};
+#if 0
+/* this is from an intial idea of having the struct correspond to the data in
+ * the file. I decided that it wasn't a good idea.
+ */
+struct tag_value {
+        uint32_t type;
+        union {
+                struct {
+                        uint32_t reserved;
+                        struct {
+                                s15Fixed16Number X;
+                                s15Fixed16Number Y;
+                                s15Fixed16Number Z;
+                        } XYZNumber;
+                } XYZType;
+        };
+}; // I guess we need to pack this?
+#endif
+
+#define RGB_SIGNATURE  0x52474220
+#define GRAY_SIGNATURE 0x47524159
+
+struct _qcms_profile {
+        uint32_t class;
+        uint32_t color_space;
+        qcms_intent rendering_intent;
+        struct XYZNumber redColorant;
+        struct XYZNumber blueColorant;
+        struct XYZNumber greenColorant;
+        struct curveType *redTRC;
+        struct curveType *blueTRC;
+        struct curveType *greenTRC;
+        struct curveType *grayTRC;
+        struct lutType *A2B0;
+
+        struct precache_output *output_table_r;
+        struct precache_output *output_table_g;
+        struct precache_output *output_table_b;
+};
+
+#ifdef _MSC_VER
+#define inline _inline
+#endif
+
+static inline float s15Fixed16Number_to_float(s15Fixed16Number a)
+{
+        return ((int32_t)a)/65536.;
+}
+
+static inline s15Fixed16Number double_to_s15Fixed16Number(double v)
+{
+        return (int32_t)(v*65536);
+}
+
+void precache_release(struct precache_output *p);
+qcms_bool set_rgb_colorants(qcms_profile *profile, qcms_CIE_xyY white_point, qcms_CIE_xyYTRIPLE primaries);
+
+void qcms_transform_data_rgb_out_lut_sse2(qcms_transform *transform,
+                                          unsigned char *src,
+                                          unsigned char *dest,
+                                          size_t length);
+void qcms_transform_data_rgba_out_lut_sse2(qcms_transform *transform,
+                                          unsigned char *src,
+                                          unsigned char *dest,
+                                          size_t length);
+void qcms_transform_data_rgb_out_lut_sse1(qcms_transform *transform,
+                                          unsigned char *src,
+                                          unsigned char *dest,
+                                          size_t length);
+void qcms_transform_data_rgba_out_lut_sse1(qcms_transform *transform,
+                                          unsigned char *src,
+                                          unsigned char *dest,
+                                          size_t length);